Usually I try to avoid having to purchase any sort of food or drink at the airport. Besides being overpriced, the food--even simple things--tends to be so bad that it can take the joy out of being alive. This has happened to me recently with such comestibles as a sandwich from the La Brea bakery outlet in Los Angeles--if mustard had been slathered on a piece of particle board, I couldn't have told the difference.The same often goes for cocktails, which are always bad and made of artificial things. So if forced into drinking, I opt for a beer, even though it's not hard to tell that most airport bars have never cleaned their beer lines. But sometimes you've got to succumb . . .